drop css hacks used for oldIEs. the site doesn't work on them.
optimize HTML5 Logo (svg)
header cleanup: remove x-ua-compatible, html5shiv, and conditional comments. we no longer need them.
update footer to include license information and to have an attribution for HTML5 logo.
it's end of 2013. with the current feature sets most of them are ready.
fix ill-formed svg.
move to jQuery 2.0. also add fallback local files.